TWI487502B - Biophysical signal detection apparatus - Google Patents

Description

Physiological signal detecting device

The present invention relates to physiological signal detecting devices, and more particularly to portable electrocardiographic measuring devices.

Older people, long-distance and personalized health care are receiving increasing attention, and the trend of electronic products for health testing is moving toward a portable direction. This type of product design focuses on light, power-saving, low-cost and can track the user's physiological signals for a long time, such as body temperature, electrocardiogram, pulse and other information, in order to effectively record and pay attention to the user's physiological condition. Therefore, there is a need for a physiological signal detecting device that is simple in operation, compact in structure, and convenient for charging and storage.

In view of the above, the present invention discloses a physiological signal detecting device, including a battery, disposed in the physiological signal detecting device, having a positive end and a negative end; a first input end, a second input end, and a charging detecting end; The physiological signal detecting circuit is electrically coupled to the first input end and the second input end. When the first input end and the second input end are electrically connected to the measurement target, the physiological signal detecting circuit is configured according to the first input end. And the electrical detection result of the second input end generates a physiological signal; and the charging control circuit is electrically coupled to the first input end, the second input end, and the charging detecting end; wherein, when the first and second input ends are coupled When the power provided by the charging device is connected, the charging detecting terminal receives the charging instruction signal of the charging device, and the charging control device is activated according to the charging instruction signal. Charge the battery with electricity.

The present invention further discloses the above charging device, including first, second, and third ends for respectively coupling a first input end, a charging indicating end, and a second input end; and a charging circuit coupled to the first and second ends And the third end is configured to provide the power and the charging indication signal.

The following disclosure may be compared with the drawings, wherein corresponding parts are generally designated by the same reference numerals. And some of the structures are not drawn according to the actual proportion. In the following description, a number of specific setting details have been added for ease of understanding. However, it should be understood by those having ordinary skill in the art that the present invention can be implemented by referring only to some of the examples disclosed herein. In some examples, well-known structures and components are presented in the form of a block diagram to make the content concise.

FIG. 1 is a schematic structural diagram of a physiological signal detecting apparatus 200 and a charger 100 according to an embodiment of the present invention. In this embodiment, the physiological signal detecting device 200 is an electrocardiogram measuring device, which is of a portable design and can be fixed to the user's clothing by a magnetic buckle. The physiological signal detecting device 200 includes three terminals as interfaces with external connections, a first input terminal P _r2 , a second input terminal P _l2 , and a charging detecting terminal P _c2 . The invention is characterized in that the first and second input terminals P _r2 and P _l2 can be used as the input end of the human body electrocardiogram signal in the general measurement operation mode, or can be matched with the charging detection end P _c2 in the charging mode. As an input terminal for receiving the power supply of the charger 100.

When the physiological signal detecting device 200 is connected to the charger 100, the first input terminal P _r2 , the charging detecting terminal P _c2 , and the second input terminal P _l2 are respectively connected to the first output terminal P _r1 of the charger and the charging indicating end. P _c1 and second output terminal P _l1 . The physiological signal detecting device 200 obtains the power of the charging circuit 110 through the first input terminal P _r2 and the second input terminal P _l2 , and obtains the charging instruction signal Vt through the charging detecting terminal P _c2 .

Referring to Figure 1, the physiological signal detection apparatus 200 includes a charging detection circuit 240, and P _c2 are electrically coupled to the charge detecting terminal for detecting the charge detection terminal P _c2 and determines the charging potential of the instruction signal, The corresponding detection signal is output to control the operation mode of the physiological signal detecting device 200. The charge detecting circuit 240 is composed of, for example, a comparator 210 and resistors R1 and R2. When the potential of the charging detection terminal P _c2 is greater than the reference potential Vref, the charging detection circuit 240 outputs a corresponding first detection signal to the node No to correspondingly indicate that the physiological signal detecting device 200 is in the charging/receiving mode; When the potential of the detecting terminal P _c2 is not greater than the reference potential Vref, the charging detecting circuit 240 outputs a corresponding second detecting signal to the node No for correspondingly indicating that the physiological signal detecting device 200 is in the normal measuring operation mode.

The physiological signal detecting device 200 includes a physiological signal detecting circuit 220 electrically connected to the first input terminal P _r2 and the second input terminal P _l2 . Physiological signal detection circuit 220 by the driving power source Vcc_ECG, accepted and processed, a second input terminal P _l2 input signals from a first input terminal P _r2, such as bio-electrical signals, and converts it into a physiological signal Sd and outputs.

The physiological signal detecting device 200 includes a micro processing unit 230 coupled to the physiological signal detecting circuit 220 and the node No. The micro processing unit 230 is driven by the power source Vcc, when receiving the second detection signal from the node No (ie, When operating in the normal measurement operation mode, the micro processing unit 230 receives and processes the physiological signal Sd from the physiological signal detecting circuit 220, and calculates a plurality of physiological data St according to the physiological signal Sd. In some embodiments, the physiological data St may include: heart rate, calorie consumption, electrocardiogram, exercise time and the like. The physiological signal detecting device 200 further includes a wireless transmitting device 280 for transmitting the physiological data St for storage and display on a personal computer, a cloud database, or a personal mobile device.

The physiological signal detecting device 200 includes a battery BAT and a charging control circuit 250. The battery BAT includes a positive end and a negative end, and is installed inside the physiological signal detecting device 200 as a power source for supplying various circuits inside the physiological signal detecting device 200. The charging control circuit 250 has a power input terminal Vin and a control terminal EN coupled to the first input terminal _Pr2 and the node No, respectively. When the control terminal EN receives the first detection signal from the node No (ie, when operating in the charging/receiving mode), the charging control circuit 250 is enabled and transmits the first input terminal P _r2 through the power input terminal Vin. After the power is processed, it is supplied to the positive terminal of the battery BAT. When the node No is the second detection signal (ie, when operating in the general measurement operation mode), the charging control circuit 250 disables and disconnects the power input terminal Vin from the battery BAT, and stops the battery BAT. Charging action. The physiological signal detecting device 200 further includes a transistor M1. The drain and the gate are coupled to the second input terminal P _l2 , the base is coupled to the first input terminal P _r2 , and the source is coupled to the reference potential node GND and the battery. The negative ends of the BAT are commonly grounded. The battery BAT is charged through the first input terminal P _r2 and the second input terminal P _l2 . The physiological signal detecting device 200 further includes a capacitor C1 coupled between the power input terminal Vin and the control terminal EN, and a diode D2 coupled between the node No and the control terminal EN.

The physiological signal detecting device 200 includes a DC conversion circuit 260 and switches SW1 and SW2. The DC conversion circuit 260 is coupled to the battery BAT to convert the voltage provided by the battery BAT into a voltage required for the operation of the circuit. The power supply to the micro processing unit is Vcc, the power supply to the physiological signal detection circuit 220 is Vcc_ECG, and the power supply to the wireless transmission device 280 is Vcc_BT. Both ends of the switch SW1 are respectively connected to the end points of the physiological signal detecting circuit 220 and the DC converting circuit 260 output power source Vcc_ECG. The control terminal of the switch SW1 is connected to the micro processing unit 230. When the micro processing unit 230 receives the second detection signal from the node No (ie, when operating in the general measurement operation mode), the micro processing unit 230 correspondingly generates the first potential. The control signal So, the conduction switch SW1 enables the power supply Vcc_ECG to be supplied to the physiological signal detecting circuit 220; when the micro processing unit 230 receives the first detection signal from the node No (ie, operates in the charging/receiving mode), the micro processing The unit 230 generates a control signal So having a first potential, and the switch SW1 turns off the power supply Vcc_ECG to the physiological signal detecting circuit 220. Both ends of the switch SW2 are connected to the end points of the wireless transmission device 280 and the DC conversion circuit 260 output power source Vcc_BT, respectively. The control terminal of the switch SW2 is connected to the micro processing unit 230. When the micro processing unit 230 receives the first detection signal from the node No (ie, when operating in the general measurement operation mode), the micro processing unit 230 correspondingly generates the first potential. Control signal So, the conduction switch SW2 causes the power supply Vcc_BT to be supplied to the wireless transmission device 280; when the micro processing unit 230 receives the first detection signal from the node No At the time (ie, when operating in the charging/receiving mode), the microprocessor unit 230 corresponds to the control signal So that generates the second potential, and the switch SW2 is turned off to stop the supply of the power source Vcc_BT to the wireless transmission device 280.

The physiological signal detecting device 200 includes a starting unit 270 coupled to the micro processing unit 230 for generating a start command Vo. When the start command Vo is transmitted to the micro processing unit 230, the physiological signal detecting device 200 is in the measuring operation mode, and the micro processing unit further connects the power switches SW1 and/or SW2 to enable the battery to supply power to the physiological The signal detecting circuit 220 and/or the wireless transmitting device 280 activate the physiological signal detecting device 200 to detect the bioelectric signal. In an embodiment, the activation unit 270 can be a Hall sensor. When the physiological signal detecting device 200 is combined with a magnetic button on the user, the Hall sensor sends a start command Vo due to the change of the magnetic field, so that the physiological signal detecting circuit 220 of the physiological signal detecting device 200 performs the measurement. .

The charger 100 can be used in conjunction with the physiological signal detecting device 200 to charge the physiological signal detecting device 200. The charger 100 includes three external contacts: a first output terminal P _r1 , a second output terminal P _{l1 ,} and a charging indicating terminal P _c1 corresponding to the first input terminal P _r2 and the second of the physiological signal detecting device 200 respectively. The input terminal P _l2 and the charging detection terminal P _c2 . When the charger 100 in conjunction with the physiological signal detection apparatus 200, a first output terminal via a P _r1 input voltage Vc on the first input terminal P _r2; through charge indicator pin P _{c1 c2} charging detection voltage Vt input terminal P ( And charging the reference potential node GND_c to the second input terminal P _l2 through the second output terminal P _l1 . The charger 100 further includes a diode D1 coupled between the first output terminal P _r1 and the output terminal of the voltage Vt. The resistor R4 is coupled between the output terminal of the voltage Vt and the charging indicating terminal P _c1 ; And coupled between the output of the voltage Vt and the second output terminal P _l1 .

FIG. 2 is a schematic diagram showing the operation of the circuit when the physiological signal detecting apparatus 200 of the embodiment of FIG. 1 is in the general measurement operation mode. At this time, the first input terminal P _r2 and the second input terminal P _l2 are respectively connected to the connection pads P1 and P2, and P1 and P2 are respectively connected to the two ends of the object to be tested (for example, the human body part) T0; and the charging detection end P _c2 is floating. When the potential of the charge detecting terminal P _c2 is the first state (for example, 2.6 V), the comparator 210 compares it with a reference voltage Vref (for example, 2.8 V), and the charge detecting circuit 240 outputs a corresponding one. The second detection signal Vb to the node No is corresponding to the indication that the physiological signal detecting device 200 is in the normal measurement operation mode.

When the micro processing unit 230 receives the second detection signal Vb from the node No, the micro processing unit 230 generates a control signal So corresponding to the first state, and the conduction switch SW2 causes the power supply Vcc_BT to be supplied to the wireless transmission device 280, and turns on the switch. SW1 causes the power source Vcc_ECG to be supplied to the physiological signal detecting circuit 220.

When the user is ready to start the measurement, the starting unit 270 generates a start command Vo to the micro processing unit 230 to cause the physiological signal detecting device 200 to detect. The physiological signal detecting circuit 220 of the physiological signal detecting circuit 220 measures the bioelectric signal of the object T0, such as the electrocardiogram signal, through the connection pads P1 and P2, and processes it into the physiological signal Sd.

When receiving the second detection signal Vb from the node No, the micro processing unit 230 receives and processes the physiological signal from the physiological signal detecting circuit 220. Sd, and a plurality of physiological data St are calculated according to the physiological signal Sd. The physiological data St is then uploaded via the wireless transmission device 280 for storage and display on a personal computer, a cloud database, or a personal mobile device.

At this time, since No is the second detection signal Vb, the charging control circuit 250 is disabled, and the connection between the power input terminal Vin and the battery BAT is cut off, and the charging operation of the battery BAT is stopped. The transistor M1 is in a closed state, so that the second input terminal P _l2 is electrically isolated from the negative terminal of the battery BAT.

Fig. 3 is a view showing the operation of the circuit when the physiological signal detecting apparatus 200 of the embodiment of Fig. 1 is in the charging mode. At this time, the charger 100 is coupled to the physiological signal detecting device 200, and the first output terminal P _r1 , the second output terminal P _{l1 ,} and a charging indicating terminal P _c1 are electrically connected to the first of the physiological signal detecting device 200 respectively. The input terminal P _r2 , the second input terminal P _l2 , and the charging detection terminal P _c2 . Since the charging terminal indicates the charging detection terminal P _c1 P _c2 input charge indication signal Vt, so that the charging detection terminal P _c2 potential of a second state (e.g. 3.0V), the comparator 210 detects the charging end potential of P _c2 After the comparison with the reference voltage Vref (for example, 2.8V), the charging detection circuit 240 outputs a corresponding first detection signal Va to the node No to correspondingly indicate that the physiological signal detecting device 200 is in a charging/receiving mode.

When the micro processing unit 230 receives the first detection signal Va from the node No, the micro processing unit 230 generates a control signal So having a second potential, and the disconnecting switch SW2 stops the power supply Vcc_BT from being supplied to the wireless transmission device 280, and The cut-off switch SW1 stops the supply of the power source Vcc_ECG to the physiological signal detecting circuit 220. Therefore, in the charging mode, both the wireless transmission device 280 and the physiological signal detecting circuit 220 stop operating.

At this time, according to the first detection signal Va of the node No, the charging control circuit 250 processes the power on the power input terminal Vin and supplies it to the battery BAT, so that the charger 100 transmits the first output terminal _Pr1 and the first input. The terminal P _r2 input voltage Vc charges the battery BAT, and the transistor M1 is in an on state, so that the second input terminal P _l2 is electrically connected to the negative terminal of the battery BAT to form a common ground, so the charger 100 and the battery BAT are formed. The first loop is used for charging operation.

Fig. 4 is a view showing the operation of the circuit when the physiological signal detecting device 200 of the embodiment of Fig. 1 is in the storage mode. In the storage mode, the charger 100 is coupled to the physiological signal detecting device 200, and the first output terminal _Pr1 , the second output terminal _P11, and a charging indicating terminal _Pc1 are electrically connected to the physiological signal detecting device 200, respectively. An input terminal P _r2 , a second input terminal P _l2 , and a charge detecting terminal P _c2 , but at this time, the charger 100 is not plugged in, for example, the power plug or the charging circuit 110 is disabled, so that the charging circuit 110 fails to supply voltage. Vc and the second detection signal Vt to the physiological signal detecting device 200. However, since the battery BAT in the physiological signal detecting device 200 continues to supply the power source Vcc, the circuit formed by the resistors R3 and R4 and the charging detecting circuit 240 causes the potential of the charging detecting terminal P _c2 to be in a third state ( For example, after the comparator 210 compares the potential of the charging detection terminal P _c2 with the reference voltage Vref (for example, 2.8V), the charging detection circuit 240 still outputs the first detection signal Va to the node No, and the corresponding indication. The physiological signal detecting device 200 is in a charging/receiving mode.

When the micro processing unit 230 receives the first detection signal Va from the node No, the micro processing unit 230 correspondingly generates the control signal with the second potential. So, the cut-off switch SW2 stops the supply of the power source Vcc_BT to the wireless transmission device 280, and turns off the switch SW1 to stop the supply of the power source Vcc_ECG to the physiological signal detecting circuit 220. Therefore, in the charging mode, both the wireless transmission device 280 and the physiological signal detecting circuit 220 stop operating.

Since the charging circuit 110 does not provide the voltage Vc, the charger 100 is simply used to carry the physiological signal detecting device 200 for storage purposes.

The physiological signal detecting device 200 provided by the present invention is used in conjunction with the charger 100. By sharing the terminals of charging and measuring, the use of the physiological signal detecting device 200 can be effectively simplified and the volume thereof can be reduced, and the storage is convenient. .

The above description discloses the concept of the invention. It should be understood that those having ordinary skill in the relevant art can make various modifications based on the above, without departing from the spirit and scope of the invention. Furthermore, all of the examples and descriptions are for illustrative purposes only, and the reader may have a better understanding of the invention and the scope of the patent protection is not limited. All of the guidelines, the context, and the examples described herein are also used as examples only, and are equivalent to any structurally or functionally equivalent alternatives, including existing or not yet invented. In addition, the words "including", "including", "having", or "owning" in the preceding paragraph are not intended to be excluded. The "example" is for demonstration purposes only and does not refer to the best method. For the sake of simplicity of the drawings, the features, layer structures, and/or components disclosed above are illustrated by specific structures and ratios, and the actual structures and ratios may differ from those of the drawings.

The above content is for demonstration purposes only. For the actual patent protection scope, please refer to the following patent claims.

100‧‧‧Charger

110‧‧‧Charging circuit

200‧‧‧physical signal detection device

210‧‧‧ Comparator

220‧‧‧physical signal detection circuit

230‧‧‧Microprocessing unit

240‧‧‧Charge detection circuit

250‧‧‧Charging control circuit

260‧‧‧DC conversion circuit

270‧‧‧Starting unit

280‧‧‧Wireless transmission

BAT‧‧‧Battery

C1‧‧‧ capacitor

D1, D2‧‧‧ diode

GND‧‧‧reference potential node

M1‧‧‧O crystal

P _r1 ‧‧‧ first output

P _l1 ‧‧‧second output

P _c1 ‧‧‧Charging indicator

P _r2 ‧‧‧ first input

P _l2 ‧‧‧ second input

P _c2 ‧‧‧Charging detection end

R1, R2, R3, R4‧‧‧ resistance

Sd‧‧‧physiological signal

St‧‧‧ Physiological data

So‧‧‧ control signal

SW1, SW2‧‧‧ switch

Va‧‧‧ first detection signal

Vb‧‧‧second detection signal

Vc‧‧‧ voltage

Vcc, Vcc_ECG, Vcc_BT‧‧‧ power supply

Vref‧‧‧reference voltage

Vo‧‧‧ start signal

Vt‧‧‧ voltage in the second state

The content of the description disclosed in the present invention can be read with the following drawings to make it easier to understand. It should be noted that some of the features of the schema are not planned according to the actual product ratio of the industry. In fact, the aspect ratio of these features can be arbitrarily increased or decreased without affecting the essence of the invention. The same features in the present invention are denoted by the same reference numerals.

FIG. 1 is a schematic structural diagram of a physiological signal detecting apparatus 200 and a charger 100 according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing the operation of the circuit when the physiological signal detecting apparatus 200 of the embodiment of FIG. 1 is in the general measurement operation mode.

Fig. 3 is a view showing the operation of the circuit when the physiological signal detecting apparatus 200 of the embodiment of Fig. 1 is in the charging mode.

Fig. 4 is a view showing the operation of the circuit when the physiological signal detecting device 200 of the embodiment of Fig. 1 is in the storage mode.

100‧‧‧Charger

110‧‧‧Charging circuit

200‧‧‧physical signal detection device

210‧‧‧ Comparator

220‧‧‧physical signal detection circuit

230‧‧‧Microprocessing unit

240‧‧‧Charge detection circuit

250‧‧‧Charging control circuit

260‧‧‧DC conversion circuit

270‧‧‧Starting unit

280‧‧‧Wireless transmission

BAT‧‧‧Battery

C1‧‧‧ capacitor

D1, D2‧‧‧ diode

GND‧‧‧reference potential node

M1‧‧‧O crystal

P _r1 ‧‧‧ first output

P _l1 ‧‧‧second output

P _c1 ‧‧‧Charging indicator

P _r2 ‧‧‧ first input

P _l2 ‧‧‧ second input

P _c2 ‧‧‧Charging detection end

R1, R2, R3, R4‧‧‧ resistance

Sd‧‧‧physiological signal

St‧‧‧ Physiological data

SW1, SW2‧‧‧ switch

Vc‧‧‧ voltage

Vcc, Vcc_ECG, Vcc_BT‧‧‧ power supply

Vref‧‧‧reference voltage

Vo‧‧‧ start signal

Vt‧‧‧ voltage in the second state

Claims (10)

A physiological signal detecting device includes: a battery disposed in the physiological signal detecting device, having a positive end and a negative end; a first input end, a second input end, and a charging detecting end; a physiological signal detecting circuit is electrically coupled to the first input end and the second input end, and when the first input end and the second input end are electrically connected to a measuring target, the physiological signal detecting The measuring circuit generates a physiological signal according to the electrical detection result of the first input end and the second input end; and a charging control circuit, and the first input end, the second input end, and the charging detecting end electrical The charging detection terminal receives a charging indication signal of the charging device, and the charging control device receives the charging instruction signal according to the charging instruction signal. And starting to use the power to charge the battery, wherein the charging control circuit further includes a first resistor coupled to the charging detection terminal to a power terminal of the charging control circuit to enable the first and second inputs end When the charging detection end is coupled to the charging device, but the charging device is not powered, the first resistor is coupled to the resistor coupled to the charging detecting terminal of the charging device to form a voltage dividing circuit to the charging control circuit. The potential of the power supply terminal is divided so that the potential on the charge detecting end is used to determine that the physiological signal detecting device is in a storage mode. The physiological signal detecting device of claim 1, further comprising: a micro processing unit electrically coupled to the charging detecting end and the physiological signal detecting circuit, wherein the micro processing unit receives the Physiological signal detection The physiological signal of the circuit is measured, and a plurality of physiological data are calculated according to the physiological signal. The physiological signal detecting device of claim 2, further comprising: a power switch coupled to the micro processing unit, the physiological signal detecting circuit and the battery, wherein the charging detecting end receives When the charging instruction signal is received, the micro processing unit returns the charging indication signal to cut off the power switch, so that the battery stops supplying power to the physiological signal detecting circuit. The physiological signal detecting device of claim 3, further comprising: a starting unit coupled to the micro processing unit, the physiological signal being sent when the starting unit sends an activation signal to the micro processing unit The detecting device is in a measuring operation mode, and the micro processing unit further connects the power switch to enable the battery to supply power to the physiological signal detecting circuit. The physiological signal detecting device according to claim 4, wherein the starting unit is a Hall sensor. The physiological signal detecting device of claim 1, further comprising: a DC conversion circuit coupled to the battery, wherein the DC conversion circuit converts the voltage of the battery to the physiological signal detector The internal circuit in the device. The physiological signal detecting device of claim 2, further comprising: a Bluetooth device electrically coupled to the micro processing unit, wherein the Bluetooth The device receives the physiological data and converts the physiological data into a wireless signal. The physiological signal detecting device of claim 2, wherein the physiological data comprises: heart rate, calorie consumption, electrocardiogram, exercise time. The physiological signal detecting device of claim 1, further comprising: the charging device, the charging device comprising: a first, a second, and a third end, respectively, for coupling the first input end, the a charging indicating end and the second input end; and a charging circuit coupled to the first, second and third ends for providing the power and the charging indication signal. The physiological signal detecting device of claim 1, wherein the charging detecting circuit further comprises a second resistor coupled between the charging detecting end and the ground end; the charging device further comprises a a third resistor and a fourth resistor are connected in series between the charging detecting end and the ground end; and the charging device further includes a diode having an anode coupled to the third and fourth resistors The connection point has a cathode for coupling to the first input end.